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- INTRODUCTION: NI-21 100% Epoxy is an odorless two
component coating designed to resist high wear and harsh chemicals when applied to floors
and walls. Its high gloss finish and self-leveling characteristic make it excellent for
high build applications. When the two components are combined, a conversion from a liquid
epoxy to a thermoset solid occurs. The result is a highly durable finish that is easy to
clean.
- TYPICAL USES
- Flooring: Commercial, Industrial and Residential
- Seamless Flooring
- Concrete Floor Coating - Dust-proofing
- Chemical Containment Coating
- Seamless Fiberglass Roof and Deck System
- River-stone mortars
- ADVANTAGES AND LIMITATIONS
- Advantages
- DIMENSIONAL STABILITY DURING CURE. NI-21 has very
little shrinkage and can be used for accurate reproduction. No volatile loss or reaction
during cure of product
- HIGH SOLVENT RESISTANCE. High chemical resistance.
- CHEMICAL INERTNESS. Accepts a wide range of
fillers and pigments.
- HARDNESS. It has great toughness and shock
resistance.
- HIGH GLOSS.
- ADHESION. The tenacity of epoxy adhesion to almost
any surface is without equal among organic coatings.
- COLOR:
- Clear, Light Grey, Medium Grey, white
- White can be pigmented to pastel colors
- PHYSICAL ANALYSIS AND TECHNICAL DATA
- TYPICAL PROPERTIES
Mixed NI-21 (Resin and Curing
Agent)
| CHARACTERISTIC |
RESULTS |
TEST METHOD |
| Density |
7.9
Lb./gal. |
@ 77° F |
| Viscosity |
780-600 |
@ 77° F |
| Gel time |
25 minutes |
@ 77° F |
| Thin film
set time |
4.5 hours |
@ 77° F |
NI-21 Resin Only
| CHARACTERISTIC |
RESULTS |
TEST METHOD |
| Color (Alpha) |
125 |
ASTM D-1209 |
| Flash Point |
485 ° F. |
PENSKY-MARTENS ASTM
D-93 |
| Specific Gravity
25/25° C |
1.16 |
|
| Weight @ 25° C |
9.7 lbs./gal. |
|
- SYSTEM TESTING
| CHARACTERISTIC |
RESULTS |
TEST METHOD |
| Flammability |
Self extinguishing |
ASTM D-635 |
| Hardness Shore D |
85 |
ASTM D-2240 |
| Compressive Strength |
17,500 PSI |
ASTM D-695 |
| Tensile Strength |
4,000 PSI |
ASTM D-638 |
| Flexural Strength |
6,250 PSI |
ASTM D-790 |
| Thermal Coefficient of
Expansion |
20 by 10 ^ (-6) |
ASTM C-531 (IN/IN OF) |
| Abrasion Resistance |
24.0 mg. Loss |
Taber Abrader CS-17
Wheel 2,000 gm. Load, 1000 Cycles |
| Indentation |
Withstands
2,000 lbs. Per. Sq. inch for 30 minutes without indentation |
Mil D-3134 |
| Bond Strength to
Concrete |
350 PSI (100% concrete
failure) |
ACI 403 |
| Thermal Shock |
Passes |
ASTM C-884 |
| Tensile Elongation |
7.5% |
D-638 |
| Water Absorption % |
.10 |
D-570 |
| Elevated Temperature |
No slip or flow |
D-3134 |
| Toxicity |
Non-toxic, USDA
Approved |
|
| Fungus & Bacteria |
Will not support growth
of fungus or bacteria |
F-52505 |
- CHEMICAL RESISTANCE IMMERSION TEST
- Testing Procedure: Testing was carried out on
discs 1.75" in diameter and an approximate 0.2" thick unless, otherwise noted. D
indicates that specimen partially disintegrated.
- Values: are rounded to the first decimal place;
thus o indicates weight change within the limits + 0.049%. Unless preceded by a minus
sign, figures indicate a weight gain. Weight losses indicate leaching which also occurs
somewhat in all immersion testing simultaneous with absorption
- Concentration of 50 (phr): Parts by weight of
curing agent per 100 parts by weight of epoxy resin. All curing agents were used with a
conventional liquid, undiluted Bisphenol A epoxy resin, Epoxide Equivalent Weight 185-192
- CURE SCHEDULE: 7 days @ 73
| Reagent |
WT Change
after 3 week immersion @ 73° F. |
| Xylene |
- |
| Toluene |
6.5 |
| 1,1,1,
Trichloroethane |
0.2 |
| Synthetic
Gasohol |
- |
| M.E.K. |
D |
| Ethylene
Glycol Monodethyl Ether |
12.8 |
| Ethyl
Alcohol |
4.6 |
| Methyl
Alcohol |
14.8 |
| Skydrol |
- |
| Water
(distilled) |
0.6 |
| 5%
Detergent solution |
0.8 |
| 10% Sodium
Hydroxide |
0.4 |
| 50% Sodium
Hydroxide |
-0.1 |
| 10%
Sulfuric Acid |
1.5 |
| 70%
Sulfuric Acid |
0.4 |
| 10%
Hydrochloric Acid |
0.8 |
| 20% Nitric
Acid |
1.5 |
| 10% Acetic
Acid |
6.7 |
- APPLICATION:
- Tools - will vary due to the job - basic tools
range from straight edge or notch trowel to rollers and squeegees depending how much
material is to be applied.
- MIXING: NI-21 is mixed at a ratio of two parts
resin to one part curing agent by volume. Mix thoroughly for 3 minutes. Pour entire
contents of mixed material on application area for extended working life. Work time is
approximately 15-20 minutes but may vary with temperature changes. Mix only the amount of
material that can be applied in the allotted amount of time.
- Procedure:
- Work out of tray.
- Roll or trowel material to desired thickness. A
notch trowel will apply the most material and a vinyl squeegee will give the smallest
build.
- WARNING: Harmful if taken internally. Keep out of
reach of children. Not intended for repackaging or retail sales. For industrial use only.
Could cause skin irritation. If skin contact does occur, wash with soap and plenty of
water. Protective clothing and goggles should be worn to protect against skin and eye
contact. Employ proper ventilation. If skin contact does occur, wash with soap and plenty
of water. WARNING: Employ proper ventilation.
- . STORAGE:
- Factory sealed container shelf life is 6 months
for the unmixed materials.
- Always rotate inventory using oldest materials
first.
- . PACKAGING:
- NI-21 liquid epoxy resin is a two component
system: two parts resin to one part curing agent.
- It is packaged in kit form: 9-gallon kit;
15-gallon kit; 55-gallon drums.
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